# Writing decimals as fractions review

CCSS Math: 4.NF.C.6
Review writing decimals as fractions, and try some practice problems.

## Writing decimals as fractions

To convert a decimal to a fraction, we write the decimal number as a numerator and we write its place value as the denominator.
If there is a number to the left of the decimal point, we keep that number as a whole number.
Example 1: $0.07$
$0.0\blueD7$ is $\blueD7$ $\text{\greenD{hundredths}}$. So, we write $\blueD7$ over $\greenD{100}$.
$0.07=\dfrac{\blueD7}{\greenD{100}}$
Example 1: $2.1$
$\redC2.\blueD1$ is $\redC2$ and $\blueD1$ $\text{\greenD{tenth}}$. $\redC2$ stays a whole number. Then we write $\blueD1$ over $\greenD{10}$.
$2.1=\redC2\dfrac{\blueD1}{\greenD{10}}$
Express $0.4$ as a fraction.